Home / 15,269.70-21,072.01-8,555.31

Finding the Fourth Proportional to 15,269.70, 21,072.01 and 8,555.31

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Solution

The fourth proportional to 15,269.70, 21,072.01 and 8,555.31 is: 11,806.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,269.70 : 21,072.01 = 8,555.31 : x
  2. Step 2: Convert to fraction form
    15,269.70/21,072.01 = 8,555.31/x
  3. Step 3: Cross multiply
    15,269.70x = 21,072.01 × 8,555.31
  4. Step 4: Simplify right side
    15,269.70x = 180,277,577.87
  5. Step 5: Solve for x
    x = 180,277,577.87/15,269.70
  6. Step 6: Final answer
    x = 11,806.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.